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Tab Badge 1.23 No Restart
by Geoff Lankow
Adds a small badge to your tabs to alert you to (for example) new messages on Facebook. The badge is also visible when the tabs are pinned so you can see when there's something new available.
About this Add-on
Also in this version is a new option to delay the disappearance of the badge. This is designed to avoid the Facebook message alert being even more annoying than it is. You can set the delay with the pref extensions.tabbadge.removedelay - the value is a delay in milliseconds. 1600 should be a good value for Facebook.
In other news, this is possibly the last release on the version 1 branch. I've been working hard on new features for Tab Badge 2, and hope to release them soon. If you're interested you can see what I'm up to on the GitHub page, but I make absolutely no promises about any of it.